package com.hmall.item.service.impl;

import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.hmall.common.client.ItemClient;
import com.hmall.item.mapper.ItemMapper;
import com.hmall.item.pojo.Item;
import com.hmall.item.service.IItemService;
import org.checkerframework.checker.units.qual.A;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

@Service
public class ItemService extends ServiceImpl<ItemMapper, Item> implements IItemService {

    @Autowired
    private ItemMapper itemMapper;

    @Override
    public void updateStock(Long itemId, Integer num) {
        Item item = itemMapper.selectByIdForUpdate(itemId);
        item.setStock(item.getStock() - num);
        itemMapper.updateById(item);
    }
}
